| 摘要: |
| 多入多出（MIMO）无线信道具有空间复用增益和分集增益特性，因此MIMO系统和单入单出（SISO）无线系统相比能够获得更高的频谱效率。本文在不同天线组合下分析了几种MIMO空时信号处理算法的性能，仿真结果和理论分析表明：空间复用增益和分集增益不能同时获得最大，因此在设计MIMO通信系统时可根据实际情况选择天线数，即不仅考虑系统抵抗信道衰落的分集增益，还要考虑能够提供更高的数据传输速率，通过折衷考虑空间复杂增益和分集增益，从更全面的观点评估系统的性能。 |
| 关键词: 多入多出无线通信系统 接收机分层空时码 检测算法 性能比较 |
| DOI：10.3969/j.issn.1001-893X. |
| 投稿时间：2005-08-18修订日期：2005-11-12 |
| 基金项目:浙江省自然科学基金 |
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| Performance Comparison of Several Receivers Based on MIMO Channels |
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| Abstract: |
| Multiple Input Multiple Output(MIMO) wireless channel is characterized by multiplexing gains and diversity gains,so MIMO wireless communication systems can offer high spectrum efficiency than single input single output communication systems.In this paper,several MIMO space-time processing algorithms are analyzed based on different antenna configurations.Simulation results and theoretic analysis state that multiplexing gains and diversity gains can not achieve most value at the same time.So when MIMO communication system is designed the antenna configurations may be selected for fact.By doing this,not only the diversity gain of the scheme is taken into considercetion to combat against fading,but also its ability to accommodate higher data rate as SNR increases,and therefore providing a more complete view by diversity-multiplexing tradeoff. |
| Key words: VBLAST |
《电讯技术》编辑部 